Building a perfect recommendation engine is a very complex task.

构建一个完美的推荐引擎是一件非常复杂的任务。

youdao

Mahout currently provides tools for building a recommendation engine through the Taste library - a fast and flexible engine for CF.

Mahout目前提供了一些工具，可用于通过taste库建立一个推荐引擎—针对CF的快速且灵活的引擎。

youdao

But you could start painting the frame of the bike, whilst someone else is building the engine.

不过你可以在其他人装配发动机的同时做摩托车外壳喷漆。

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After thirty-six hours, Brown was captured in the building that served as the fire engine and guard house.

VOA: special.2009.11.06

Google, for example, was judged by my Chinese observers to have originated by building upon the prior search-engine innovations of others, but then, as the arrow indicates, has subsequently grown through mastering the ability to both create and capture its own value.

FORBES: China's Long March to Innovation Success

Building everything from trains and tractors to aircraft-engine parts is capital-intensive, but tends to be poorly rewarded.

ECONOMIST: In search of Fiat��s soul

Then he wants to cut costs and improve quality by building more cars on the same chassis--that is, frame, suspension, engine and transmission.

FORBES: Magazine Article